Has anybody mentioned the power costs of all the different payment methods? I mean, datacenters, helpdesk-offices, sales and marketing. I think Bitcoin does a way better job.
How is that different for bitcoin? Accepting bitcoin payments for purchases still requires datacenters as well as support, sales, and marketing staff given that the products/services being sold don't automagically market, sell, and support themselves just because you accept bitcoin. It might even be worse as a transaction needs to be verified by the rest of the network, not just by a single authority.
Each bitcoin transaction needs to be verified by a majority of the network in order to mitigate the risk of a fraudulent transaction. Does the energy required to do this exceed Visa's per-transaction energy requirements?